Okay...but does appear to you that at least someone from Wiki or backwards in the chain of custody from Wiki inserted something into that photo..such as a clue that there was a zip file but there is no actual zip file to be found.
In otherwords, there was some kind of alteration in that photo that is more than just changing saturation or normal photo edits.
What about the strange “keys” that Wikileaks relased on Twitter?
No, there isn’t any sign of that. Just because someone finds “pk” in a file does not mean there is, or ever was a pkzip file hidden there. You will find those bits randomly in all sorts of files, and that alone means absolutely nothing, unless you also find the rest of the file header, the file signature, and the compressed data between them.
That’s is all that happened here, someone found “pk” in one photo, and subsequent investigation failed to find any other signs of any hidden data.